Manual
Page 6
... the merit of PIO mode drive to the RAID1 mode, two drivers have to share CPU's performance. It can provide users a RAID system with PCI spec. When a PC is compatible with low CPU utilization. Similarly, it can support the RAID0 (striping), RAID1 (mirroring), RAID0+1 (striping and mirroring) or JBOD (spanning) mode...
... the merit of PIO mode drive to the RAID1 mode, two drivers have to share CPU's performance. It can provide users a RAID system with PCI spec. When a PC is compatible with low CPU utilization. Similarly, it can support the RAID0 (striping), RAID1 (mirroring), RAID0+1 (striping and mirroring) or JBOD (spanning) mode...